This is so full of what if's it's ridiculas. First off 90 to 100 psi is for someone weighing between 110 at the the lowest end and 147 on the very high end. So what happens if someone weighs 200 pounds? Gee lets run 100 psi. This calculator will help you get a lot closer to the idea pressure without all the 90 to 100 psi works for me thus works for everyone mumbo jumbo: http://www.dorkypantsr.us/bike-tire-pressure-calculator.htmlOriginally Posted by KLabs .
+1... this is definitely my experience with Conti GP4000S. These tyres actually roll faster, grip better, ride better, handle better, are more puncture resistant, and last longer, if you use a range of 90-100 psi.
Re rolling, grip and ride, I believe the reason is because roads really are not smooth surfaces, so the bumps need to be absorbed while the bike and rider continue in a forward motion, not an up then forward motion. Bump absorption provides a hugely more comfortable ride and if the tyre is always on the road surface then the grip will also be better
Why better puncture resistance ... I am not absolutely certain. I simply know that there is
Why better wear ... I am not absolutely certain, but it is probably because there is more tyre surface area on the road, for the load
Next thing that DHK2 said that tires are not going to matter...HE'S RIGHT!! And the Conti GP4000s in the rolling resistance arena are only average in rolling resistance, people imagine all sorts of things and Klabs imagines the Conti's roll the best...their just average. By the way here's proof of that too: http://www.biketechreview.com/tires_old/images/AFM_tire_testing_rev9.pdf